D) Express the current I through R1 in terms of emf e and the equivalent resista

Question

D) Express the current I through R1 in terms of emf e and the equivalent resistance R. E) Calculate the numerical value of I in A. F) Express the power P dissipated by R1 through I and R1. (33%) Problem 3: A circuit consisting of 5 resistors is shown in the graph. Their resistances are R,-19Q,R.-15 , R3 96 , R4-26, and RS®21, and the emf of the battery is = 65 V. Suppose the internal resistance of the battery is zero. R3 R. The provided answer is not corect and no specific feedback is available. Please view available hints and review the relevant material Otheexpertta.com 14% Part (a) Express the equivalent resistance of the combination of R2, R3, and R4. Grade Summary Deductions 96% 4% Attempts remaining (4% per attempt) detailed view 19 4% R R2 R3 Submit Hint I give up! Hints:0% deduction per hint. Hints remaining:1 Feedback: 0% deduction per feedback. 14% Part (b) Express the total resistance of the circuit R in terms of R1, R2, R3, R4, and R5. 14% Part (c) Calculate the numerical value of the total resistance R in . 14% Part (d) Express the current 1 through RI in terms of the emf and the equivalent resistance R.

Explanation / Answer

(A) R2, R3 and R4 are in parallel,

1/R = 1/R2 + 1/R3 + 1/R4

R = (R2R3 + R3R4 + R2R4))

(B)
now R1, R and R5 are in seris.

Req = (R1 + R5) + (R2 R3 R4 / (R2R3 + R3R4 + R2R4))

(2) Req = 19 + 8.65 + 21 = 48.7 ohm

(c) I = e / R

(d) I = 6.5 / 48.7 = 0.133 A

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